Antenna



Oct. 9, 1951 M, D ERCOLINO 2,570,333

ANTENNA Filed May 5, 1949 Patented Oct. 9, 1`951 l 'NIT'ED STATES PATENT Q'IFTFICIE'.

ANTENNA Michael D.E1.c0lno, Wanamassa, J. Application May f5, 1949, serial No. `91,4111:

(c1. .25oasl 21 Claims.

tennas and more particularly `to antennas :generally employed for television, frequency :modulation vand other high frequency systems. AThe application is a continuation in part vof my prior application Serial No. 67,360, iiled December .27., 1948 now Patent 2,518,297.

As was pointed out in my prior application, a yconventional dipole antenna designed for 'one frequency will :operate .at reduced eficiency `at different frequencies. In the `event of higher firequency operation, the effect is .due to ilattening out of the radiation 'lobes so that although more wire or metal is being energized, the .effective radiation of the antenna in .one direction is decreased. In `that application, I disclosed a dipole antenna in the form fof crossed Vs which were tilted forward. By this expedient, the energy ibecomes additive and in phase, the lobe .sharpening and remaining in line for a considerable frequency range. The antenna was cut to the lowest frequency of a wide range of frequencies to be accommodated. The theoretical and practical effect was described in that its efficiency 4was satisfactory along substantially the entire range and a particular and preferred method of assembling vor constructing the .antenna was set forth.

The antenna of the Ainstant invention is based upon the same theory of operation as that of my prior application but it is particularly Vdirected to circumstances which make the use of a more or less elaborate antenna diiiicult. Accordingly., the instant invention discloses an antenna which need not be mounted at a'high elevation, which has a pronounced simplicity of manufacture and assembly so as to realize many manufacturing economies and which can be easily and conveniently installed and operated lby the user so as to receive maximum benefit fromthe antenna.

The antenna is formed essentially from lengths of wire which are bent into V-form, two such Vs being disposed on opposite sides of an insulator bracket so as to produce crossed Vs as inthe prior application. According to the instant vinvention, however, each V is a single length `of wire. The V-sections are further bent-forwardly so as to vderive the benefits set forth hereinabove. A mounting bracket, forming a part of the complete antenna facilitates installation and subsequent orientation of the. antenna. Accordingly, a completely inexperiencedperson may install the antenna and may further orient it in either fixed position or as required by a particular transmitting station.

The above :and other advantages and objects of my invention will be further understood from the following description and drawings in which:

Fig.. 1 is a perspective View illustrating the'installation of the antenna to a window structure.

Fig. 2 `is .an enlarged, fragmentary, elevational view :of `the dipole mounting bracket. i

Fig. 3 isa cross-sectional View as `taken along the lines -3-'3 .of Fig. 2.

Fig. 4 is a cross-'sectional `View as taken along the lines-4 4 of Fig. 3.

Fig. 5 is a cross-sectional view as taken along the lines iii-5 vof Fig. l.

Fig. -6 `is a somewhat schematic view illustrating orientation of the .antenna to enhance its receptive `Vfunctions in relation lto a particular transmitting station.

In the forni shown, the antenna comprises an insulation block Il) to which are secured dipole vmetal 'brackets 'IfI and I2. Brackets I'I and I2 are substantially triangular and comprise twoA folded sides, as illustrated in Fig. 3. They are connected `to the insulation block Ill by bolts vvI3 and I4 which penetrate suitable openings in the block :as shown. Nuts vI5 and I5 tighten the brackets to the block and will hereinafter be set forth. Bolt I3 .also supports the connection lug I1 which `is tightened thereon by the nut I8. Each bracket is formed with a pair of openings I8 lin its folded edge in order to permit the desired connection and protrusion of the dipole rods.

Each dipole 20 is in the form of a V, the arms of which are integral. The apex of the V is received Within the bracket between the bolts I3 and I l2, the arms extending through the openings I9.. A convenient method of assembling each V in its bracket is to insert the bolt I4 and the nut I6 rather loosely, apply the apex of the V through the open apex of the bracket, apply the bolt I3 and nut I5 and then tighten the nuts I5 and I6 very securely. Inasmuch as the metal brackets may be of aluminum, and being relatively thin, they will bend inwardly pursuant to the force of tighteningV the nut so as to produce the bulge 2l and iirmly embrace the apex of the V dipole structure. The assembly will then be rendered extremely secure. The lug I1 and nut I8 may then be applied and tightened as required. It will beobserved that the bulge 2I forms a groove which ts the apex of thev dipole structure 2D.

The yconstruction and assembly ofk both dipole bracketsy II and I2 maybe substantially identical as are the construction and disposition of the respective dipole structures. Each dipolestructure may be of wire stock which is of a resilient nature and approximately 1/8 inch in diameter,

although it will be recognized that considerable deviation of such dimension is practicable without departing from the benefits of the invention. Each dipole arm is approximately one-half of a wave length of the lowest frequency to be accommodated. Space considerations may, however, modify these dimensions. The dipoles are bent forwardly as they emerge frornthe openings I9. Such bending maybe eiected either before or after the dipoles are inserted through such openings I9. As stated in my prior application, the angle formed by the two dipole struc-` tures may be in the order of 140 degrees or the like, although such angle is not at all critical. In any event, the vertical distance-between the insulator IIJ and the ends of the dipole may be about 6 inches. If the dipole wire is fabricated of resilient stock, the applied bend will probably be more resistant to distortion than would be the case if the dipole rods were of softer stock.

The antenna is mounted on a window or the like by means of the complementary mounting brackets 25 and 2S. Bracket 2E is rectilinear and is formed with end openings so that it can be secured to a window still as by the bolts 2l. Bracket 25 is formed with an offset lug 28 which permits the insulator I `to be'secured thereto as by bolts 29. The respective inner ends of brackets 25 and 26 are formed with a plurality of matching openings 3i! to permit desired or required extension of the antenna relative to the window. It may be necessary to extend the antenna further away from thewindow when, as Will be hereinafter described, the antenna must be oriented at a sharp angle. Bolt 3! couples the extension bracket 26 to the mounting bracket 25 and permits any desired angle between Vthe two. If the desired transmitter station is located directly forwardly of the building, it is unnecessary to use extension bracket 26 and bracket 25 may be bolted directly to the window sill. On the other hand, if orientation of the antenna is necessary as illustrated inV Fig. 6, bracket 25 is rotated until the desired reception is secured and bolt 3| is then tightened in order to maintain the antenna at that angle. Of course, the user may re-orient the antenna for different stations, if he so desires and, since the brackets are accessible from the Window, he may merely reach out and re-orient the antenna as desired. The feed wires from the television receiver are connected to the lugs Il, as willbe evident.

The antenna of the instant invention is very economical to construct and is efficient to a marked degree although requiring only the simplest of installation. t may be conveniently oriented by the user, the arrow in Fig. 6 indicating reception from a particular transmitter stationv located in that direction. Thev dipole rods may be made substantially of any metal and a length thereof is easily bent into the required shape. In the form shown, the insulating member'is secured at'the apices of each V dipole structure so that the axis of each said V structure is in substantially the same horizontal plane.

(The dipole rods or arms are bent forwardly.

They emerge from the openings i9 as illustrated inFig. 3 in order to achieve the benets of such construction as set forth herein.

What is claimed is: i

1. A high frequency antenna' comprising two pairs of dipole rods, each pair being in the form of a V and an insulatingmember `and dipole bracket secured to the apex of each V, the apices of the V-structure being substantially adjacent each other on said insulating member and the axes of the V-structures being in the same horizontal plane, said dipole brackets being folded metallic members having a pair of spaced openings formed through the fold thereof, the rods of each dipole structure extending through the respective, openings of each dipole bracket.

2. A high frequency antenna according to claim 1 and wherein each dipole bracket is formed with two complementary pairs of openings therethrough, and a pair of bolts each going through complementary openings to secure the dipole bracket to the insulating member, the apices of the V-structure being securely maintained between the two bolts on the respective dipole brackets.

3. A high frequency antenna comprising two V-shaped dipole structures, each dipolestructure comprising a single length of metal bent into V-form, an insulating member, a dipole bracket for each dipole structure, each dipole bracket comprising a folded over piece of metal connected to said insulating member, each dipole structure having its apex maintained within the fold of its bracket and disposed so that the axes of the V-structures are in substantially the same horizontal plane, the fold of each bracket being at the rear of the bracket and having a pair of openings formed therethrough for admitting the respective rods of each dipole structure.

4. A high frequency antenna according to claim 3 and including a pair of fastening bolts for each dipole bracket for securing it to the insulating member, the apex of each dipole V-structure being disposed between the pair of bolts of its bracket and being secured Within its bracket by the action of said bolts. l

5. A high frequency antenna comprising a pair of V-shaped dipole structures, an insulating member connecting the apicesof the V-structures so that the axes of the V-structures are in substantially the same horizontal plane, each V-structure comprising a single length of wire bent into V- form, and a mounting bracket structure connected to said insulating member for mounting the antenna to a support, said mounting bracket structure comprising two interconnected rods, one of said rods being connected to said insulating member and the other rod being in the horizontal plane and adapted for connection to a support, the interconnection of said rods being variable so as to permit one of said rods to pivot in a horizontal plane relative to the other rod, and wherein one rod rests on the other and each rod is elongated and formed with a series of complementary openings, and a bolt pivotally connecting said rods by being disposed through respective openings in the rods, the pivotal relationship of the rods permitting horizontal orientation of the antenna, and including a pair of folded dipole brackets connected at respective ends of the insulating member and enclosing the apices of the respective V-structures so as to secure said V- structures to the respective ends of the insulating member, the folded edge of each dipole bracket having a pair of spaced openings formed therethrough from which the rods of the V-structures emerge.

6. A high frequency antenna comprising two pairs of dipole rods, each pair being in the form of a V and an insulating member and dipole bracket secured to the apex of each V,'the apices of the V-structure being substantially adjacent each other on said insulating member and the axes of the V-structures being in the same horizontal plane, said dipole brackets being folded metallic members having a pair of openings formed in the fold thereof, the rods of each dipole structure extending through the respective openings of each dipole bracket, each dipole bracket being formed with two complementary pairs of openings therethrough. and a pair of bolts each going through complementary openings to secure the dipole bracket to the insulating member, the apices of the V-structure being securely maintained between the two bolts on the respective dipole brackets, each dipole bracket being substantially triangular and folded over itself to form said fold, the apex of the triangular dipole bracket being opposite said fold and having one of said bolts therethrough and through the insulating member.

7. A high frequency antenna according to claim 6 and wherein said insulating member is elongated and the triangular dipole brackets are disposed with their apices adjacent each other on the respective ends of the insulating member, said bolts pressing adjacent side portions of the folded 6 v over brackets into contact when said bolts are tightened, the apex of the V-structure forming a bulge in the side portion between said bolts.`

MICHAEL D. ERCOLINO.

REFERENCES CITED The following references are of record in th le of this patent:

UNITED STATES PATENTS OTHER REFERENCES Radio-Electronics for December 1948, page 90.

Television for March 1949, page 60.

Radios Master, 12th edition, page 40, copyright May 9, 1947. 

